Visualizing the particle-hole dualism in high-temperature superconductors
Superconductivity
2007-05-23 v1 Disordered Systems and Neural Networks
Abstract
Recent Scanning Tunneling Microscope (STM) experiments offer a unique insight into the inner workings of the superconducting state of high-Tc superconductors. Deliberately placed inside the material impurities perturb the coherent state and produce additional excitations. Superconducting excitations - quasiparticles - are the quantum mechanical mixture of negatively charged electron (-e) and positively charged hole (+e). Depending on the applied voltage bias in STM one can sample the particle and hole content of a superconducting excitation. We argue that the complimentary cross-shaped patterns observed on the positive and negative biases are the manifestation of the particle-hole dualism of the quasiparticles.
Keywords
Cite
@article{arxiv.cond-mat/0003142,
title = {Visualizing the particle-hole dualism in high-temperature superconductors},
author = {Ivar Martin and Alexander V. Balatsky},
journal= {arXiv preprint arXiv:cond-mat/0003142},
year = {2007}
}
Comments
4 pages, 4 eps figures